Image pickup apparatus

Abstract

To provide an image pickup apparatus capable of adding signals from a plurality of photoelectric conversion portions, an image pickup apparatus including a plurality of unit cells arranged in an array, each unit cell including a plurality of photoelectric conversion portions and a common circuit for inputting signals from the plurality of photoelectric conversion portions and outputting the signals from the unit cell, a first addition circuit for adding the signals from the plurality of photoelectric conversion portions in the unit cell, and a second addition circuit for adding the signals from the plurality of photoelectric conversion portions outside the unit cell is provided.

1. An image pickup apparatus comprising:
 a plurality of unit cells arranged in an array, each unit cell including a plurality of photoelectric conversion portions and a common circuit for inputting signals from said plurality of photoelectric conversion portions and outputting the signals to the outside of said unit cell; 
 a first control portion for effecting control so that signals from a predetermined number (more than two) of photoelectric conversion portions for outputting signals of a same color are added at input portions of said common circuits included in said unit cells; 
 a common output line to which a plurality of signals from said plurality of unit cells are output sequentially; and 
 a second control portion for effecting control so that the signals from a predetermined number (more than two) of photoelectric conversion portions for outputting signals of the same color are added outside of said unit cells and the added signals are output from said common output line. 
 
   
   
     2. An apparatus according to  claim 1 , wherein
 said common circuit comprises amplification means for amplifying the signals from said plurality of photoelectric conversion portions and outputting the signals. 
 
   
   
     3. An apparatus according to  claim 1 , wherein said second control portion adds the signals using horizontal transfer means. 
   
   
     4. An apparatus according to  claim 1 , further comprising read means for reading out signals from photoelectric conversion portions of two lines in a vertical direction by interlaced scanning. 
   
   
     5. An apparatus according to  claim 1 , further comprising a color filter arranged in said photoelectric conversion portions.